The GLSV-ZNH5-40.5 Smart Phase-Controlled Vacuum Circuit Breaker is an Indoor Medium-Voltage Vacuum Circuit Breaker designed specifically for 40.5 kV non-linear load applications. It supports phase-selective switching, non-full-phase operation, and anti-pumping control, significantly reducing inrush current and system transients during closing action.

The device adopts three-phase independent operation with a permanent magnet mechanism, enabling high-precision switching control with ±0.5 ms accuracy. An integrated energy storage module ensures low-power operation, and the unit features online monitoring, event recording, and operation waveform capture.

With a compact structure and mechanical lifespan ≥30,000 operations, it also supports manual emergency tripping. It is ideally suited for precision control of critical loads such as transformers, capacitor banks, and reactors.